test: move more testroot dependencies into test-root dracut module

[Henrik66]

Moved test/TEST-01-BASIC/test-init.sh → modules.d/80test-root/test-init.sh .

Changed test-init.sh so that it can call out test specific init and used it in TEST-16.

This should help making steps towards https://github.com/dracutdevs/dracut/issues/2383 .

Checklist

• [ ] I have tested it locally
• [ ] I have reviewed and updated any documentation if relevant
• [ ] I am providing new code and test(s) for it

[LaszloGombos]

@Henrik66 Can you please rebase this on top of https://github.com/dracutdevs/dracut/commit/af31df4b365f11cf1edd92914d2d83b3bd1588e8 - and convert test 18 and test 30 also if reasonable ?

[stale[bot]]

This issue is being marked as stale because it has not had any recent activity. It will be closed if no further activity occurs. If this is still an issue in the latest release of Dracut and you would like to keep it open please comment on this issue within the next 7 days. Thank you for your contributions.